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Bulletin of Chinese Academy of Sciences (Chinese Version)

Keywords

coral reefs, carbon neutrality, negative emissions, resilience, ecological restoration

Document Type

Technical Roadmap and Strategic Thinking of Ocean Negative Emissions Aiming Carbon Neutrality

Abstract

Coral reefs are one of the most productive, and yet most vulnerable marine ecosystems. The global decline of coral reefs induced by climate change and human activities has already affected the processes of coral calcification and carbon cycling in the reef ecosystem, intensifying the long-standing CO2 "source-sink" debate over coral reefs. Despite the fact that coral calcification is accompanied by the release of CO2 to the atmosphere, the significance of coral reefs as a carbon sink cannot be ignored, given the complex biogeochemical processes in the reef ecosystem and the characteristic mixotrophic lifestyle of the reef-building corals. From the perspective of increasing coral resilience to climate change, this study attempts to clarify the controversy over the coral reef CO2 "source-sink" debate, explore the possible ecological regulations and pathways to transform coral reefs from a carbon source to a carbon sink, and provide theoretical framework and technical support for the deployment of ocean negative carbon emissions and the implementation of the national carbon neutrality strategy

First page

270

Last Page

278

Language

Chinese

Publisher

Bulletin of Chinese Academy of Sciences

Original Submission Date

2021-03-02

References

1 Morais R A, Connolly S R, Bellwood D R. Human exploitation shapes productivity-biomass relationships on coral reefs. Global Change Biology, 2020, 26(3):1295-1305.

2 焦念志.研发海洋"负排放"技术支撑国家"碳中和需求.中国科学院院刊, 2021, 36(2):179-187.

3 Kinsey D W, Hopley D. The significance of coral reefs as global carbon sinks-Response to Greenhouse. Global and Planetary Change, 1991, 3(4):363-377.

4 Hatcher B G. Coral reef primary productivity:A beggar's banquet. Trends in Ecology&Evolution, 1988, 3(5):106-111.

5 Kayanne H, Suzuki A, Saito H. Diurnal changes in the partial pressure of carbon dioxide in coral reef water. Science, 1995, 269:214-216.

6 Chisholm J R M, Barnes D J. Anomalies in coral reef community metabolism and their potential importance in the reef CO2 source-sink debate. PNAS, 1998, 95(11):6566-6569.

7 Ware J R, Smith S V, Reaka-Kudla M L. Coral reefs:Sources or sinks of atmospheric CO2?. Coral Reefs, 1992, 11(3):127- 130.

8 Macreadie P I, Anton A, Raven J A, et al. The future of Blue Carbon science. Nature Communications, 2019, 10(1):1-13.

9 Shi T, Niu G F, Kvitt H, et al. Untangling ITS2 genotypes of algal symbionts in zooxanthellate corals. Molecular Ecology Resources, 2021, 21(1):137-152.

10 LaJeunesse T C, Parkinson J E, Gabrielson P W, et al. Systematic revision of Symbiodiniaceae highlights the antiquity and diversity of coral endosymbionts. Current Biology, 2018, 28(16):2570-2580.

11 Muscatine L. The role of symbiotic algae in carbon and energy flux in reef corals//Dubinsky Z, ed. Ecosystems of the World vol. 25:Coral Reefs. New York:Elsevier, 1990:75-87.

12 Putnam H M, Barott K L, Ainsworth T D, et al. The vulnerability and resilience of reef-building corals. Current Biology, 2017, 27(11):528-540.

13 Hughes T P, Kerry J T, Álvarez-Noriega M, et al. Global warming and recurrent mass bleaching of corals. Nature, 2017, 543:373-377.

14 Licuanan W Y, Robles R, Reyes M. Status and recent trends in coral reefs of the Philippines. Marine Pollution Bulletin, 2019, 142:544-550.

15 Huang J Z, Wang F X, Zhao H W, et al. Reef benthic composition and coral communities at the Wuzhizhou Island in the South China Sea:The impacts of anthropogenic disturbance. Estuarine, Coastal and Shelf Science, 2020, 243:106863.

16 Fagan K E, MacKenzie F T. Air-sea CO2 exchange in a subtropical estuarine-coral reef system, Kaneohe Bay, Oahu, Hawaii. Marine Chemistry, 2007, 106(1-2):174-191.

17 Gattuso J P, Allemand D, Frankignoulle M. Photosynthesis and calcification at cellular, organismal and community levels in coral reefs:A review on interactions and control by carbonate chemistry. Integrative and Comparative Biology, 1999, 39(1):160-183.

18 Lønborg C, Calleja M L, Fabricius K E, et al. The Great Barrier Reef:A source of CO2 to the atmosphere. Marine Chemistry, 2019, 210:24-33.

19 Cotovicz L C Jr, Chielle R, Marins R V. Air-sea CO2 flux in an equatorial continental shelf dominated by coral reefs (Southwestern Atlantic Ocean). Continental Shelf Research, 2020, 204:104175.

20 Yan H Q, Yu K F, Shi Q, et al. Air-sea CO2 fluxes and spatial distribution of seawater pCO2 in Yongle Atoll, northern-central South China Sea. Continental Shelf Research, 2018, 165:71- 77.

21 de Goeij J M, van Duyl F C. Coral cavities are sinks of dissolved organic carbon (DOC). Limnology and Oceanography, 2007, 52(6):2608-2617.

22 Wimart-Rousseau C, Lajaunie-Salla K, Marrec P, et al. Temporal variability of the carbonate system and air-sea CO2 exchanges in a Mediterranean human-impacted coastal site. Estuarine, Coastal and Shelf Science, 2020, 236:106641.

23 Crossland C J, Hatcher B G, Smith S V. Role of coral reefs in global ocean production. Coral Reefs, 1991, 10(2):55-64.

24严宏强,余克服,谭烨辉.珊瑚礁区碳循环研究进展.生态学报, 2009, 29(11):6207-6215.

25 Furla P, Galgani I, Durand I, et al. Sources and mechanisms of inorganic carbon transport for coral calcification and photosynthesis. The Journal of Experimental Biology, 2000, 203(22):3445-3457.

26 Rinkevich B, Loya Y. Does light enhance calcification in hermatypic corals?. Marine Biology, 1984, 80(1):1-6.

27 Rädecker N, Pogoreutz C, Wild C, et al. Stimulated respiration and net photosynthesis in Cassiopeia sp. during glucose enrichment suggests in hospite CO2 limitation of algal endosymbionts. Frontiers in Marine Science, 2017, 4:267.

28 Suzuki A, Kawahata H. Carbon budget of coral reef systems:An overview of observations in fringing reefs, barrier reefs and atolls in the Indo-Pacific regions. Tellus B:Chemical and Physical Meteorology, 2003, 55(2):428-444.

29 Mayer B, Rixen T, Pohlmann T. The spatial and temporal variability of air-sea CO2 fluxes and the effect of net coral reef calcification in the Indonesian Seas:A numerical sensitivity study. Frontiers in Marine Science, 2018, 5:116. 25 Akhand A, Watanabe K, Chanda A, et al. Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum. Science of the Total Environment, 2021, 752: 142190.

30 Akhand A, Watanabe K, Chanda A, et al. Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum. Science of the Total Environment, 2021, 752: 142190.

31 Jiao N Z, Herndl G J, Hansell D A, et al. Microbial production of recalcitrant dissolved organic matter: Long-term carbon storage in the global ocean. Nature Reviews Microbiology, 2010, 8(8): 593-599.

32 Conti-Jerpe I E, Thompson P D, Wong C W M, et al. Trophic strategy and bleaching resistance in reef-building corals. Science Advances, 2020, 6(15): eaaz5443.

33 Hughes T P, Huang H, Young M A L. The wicked problem of China’s disappearing coral reefs. Conservation Biology, 2013, 27(2): 261-269.

34 Darling E S, Alvarez-Filip L, Oliver T A, et al. Evaluating life- history strategies of reef corals from species traits. Ecology Letters, 2012, 15(12): 1378-1386.

35 Burmester E M, Breef-Pilz A, Lawrence N F, et al. The impact of autotrophic versus heterotrophic nutritional pathways on colony health and wound recovery in corals. Ecology and Evolution, 2018, 8(22): 10805-10816.

36 Ferrier-Pagès C, Leal M C. Stable isotopes as tracers of trophic interactions in marine mutualistic symbioses. Ecology and Evolution, 2019, 9(1): 723-740.

37 Loussert-Fonta C, Toullec G, Paraecattil A A, et al. Correlation of fluorescence microscopy, electron microscopy, and NanoSIMS stable isotope imaging on a single tissue section. Communications Biology, 2020, 3: 362.

38 Tanaka Y, Suzuki A, Sakai K. The stoichiometry of coral- dinoflagellate symbiosis: Carbon and nitrogen cycles are balanced in the recycling and double translocation system. The ISME Journal, 2018, 12(3): 860-868.

39 Zheng X Q, Li Y C, Liang J L, et al. Performance of ecological restoration in an impaired coral reef in the Wuzhizhou Island, Sanya, China. Journal of Oceanology and Limnology, 2021, 39(1): 135-147.

40 van Oppen M J H, Gates R D, Blackall L L, et al. Shifting paradigms in restoration of the world’s coral reefs. Global Change Biology, 2017, 23(9): 3437-3448.

41 Omori M. Coral restoration research and technical developments: What we have learned so far. Marine Biolog Research, 2019, 15(7): 377-409.

42 Thomas C D. Translocation of species, climate change, and the end of trying to recreate past ecological communities. Trends in Ecology & Evolution, 2011, 26(5): 216-221.

43 Suzuki G, Okada W, Yasutake Y, et al. Enhancing coral larval supply and seedling production using a special bundle collection system “coral larval cradle” for large-scale coral restoration. Restoration Ecology, 2020, 28(5): 1172-1182.

44 Barshis D J, Ladner J T, Oliver T A, et al. Genomic basis for coral resilience to climate change. PNAS, 2013, 110(4): 1387-1392.

45 Peixoto R S, Rosado P M, Leite D C D, et al. Beneficial microorganisms for corals (BMC): Proposed mechanisms for coral health and resilience. Frontiers in Microbiology, 2017, 8: 341.

46 Jiao N, Robinson C, Azam F, et al. Mechanisms of microbial carbon sequestration in the ocean—future research directions. Biogeosciences, 2014, 11(19): 5285-5306.

47 Zhao H, Yuan M, Strokal M, et al. Impacts of nitrogen pollution on corals in the context of global climate change and potential strategies to conserve coral reefs. Science of the Total Environment, 2021, 774: 145017.

48 Morris L A, Voolstra C R, Quigley K M, et al. Nutrient availability and metabolism affect the stability of coral- Symbiodiniaceae symbioses. Trends in Microbiology, 2019, 27(8): 678-689.

49 Liu C C K, Jin Q. Artificial upwelling in regular and random waves. Ocean Engineering, 1995, 22(4): 337-350.

50 Radice V Z, Hoegh-Guldberg O, Fry B, et al. Upwelling as the major source of nitrogen for shallow and deep reef-building corals across an oceanic atoll system. Functional Ecology, 2019, 33(6): 1120-1134.

51 Bayraktarov E, Pizarro V, Eidens C, et al. Bleaching susceptibility and recovery of Colombian Caribbean corals in response to water current exposure and seasonal upwelling. PLoS One, 2013, 8(11): e80536.

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